12M, 140, 140M, 150, 160M and 160 Motor Graders Hydraulic and Steering System Calibration Procedures Caterpillar


Calibration Procedures
`
1.1. Introduction
2.1. Required Tools
3.1. Machine Preparation
4.1. Calibrate the Implement Solenoids
5.1. Calibration for Articulation Position Sensor

------ WARNING! ------

Personal injury or death can result from sudden machine movement.

Sudden movement of the machine can cause injury to persons on or near the machine.

Prevent possible injury by performing the procedure that follows before working on the machine.


Introduction

The following will explain the calibration procedure for the implement solenoids and the articulation position sensor.

Required Tools

Table 1
Tool  Description  Qty 
  AVSpare Electronic Technician (ET) 

The AVSpare Electronic Technician (ET) is used to access the calibration procedures. A message on the Cat ET screen will give instructions that guide the user through the calibration procedure. Refer to the Manual that is provided with the Cat ET for more information about Cat ET.

Machine Preparation

  1. Move the machine to a smooth horizontal location.

  2. Chock the wheels.

  3. Lower all of the implements.


    Illustration 1g01127810
    Cutaway view of the cab
    (1) Service connector

  4. Connect Cat ET to service connector (1).

Note: The following information is an example of the calibration procedure. The actual calibration screens may not be for your machine and the screens may vary as new versions of software are released.

Calibrate the Implement Solenoids

The calibration of the implement solenoids should be performed if any of the following items occur:

  • The cylinder cycle time is slow.

  • Drift of the implements.

  • The implement solenoid is remounted.

  • The implement solenoid is replaced.

  • The machine Electronic Control Module (ECM) is replaced.

Note: The following information is an example of the calibration procedure. The actual calibration screens may vary as new versions of the software are released.

  1. To start, select the Implement ECM.

  2. To get to the calibration procedures for the implement solenoids, click the service menu.


    Illustration 2g01131162

  3. Click on Calibrations.

  4. Click on "Solenoid Calibrations".


    Illustration 3g01128237

  5. Read all warnings and understand all warnings. Click on the "Accept" icon


    Illustration 4g01128301

  6. Follow the directions on the screen in order to complete the calibration procedure.

Note: All 18 solenoid calibrations for the implements are completed in the same manner.

Calibration for Articulation Position Sensor

The calibration of the articulation position sensor should be performed if any of the following items occur:

  • The articulation position sensor is remounted.

  • The articulation position sensor is replaced.

  • The machine ECM is replaced.

Note: The following information is an example of the calibration procedure. The actual calibration screens may vary as new versions of the software are released.

  1. To get to the calibration procedures for the articulation position sensor, click the service menu.


    Illustration 5g01131162

  2. Click on Calibrations.

  3. Click on "Articulation Position Sensor Calibration".


    Illustration 6g01131273

  4. Follow the directions on the screen in order to complete the calibration procedure.

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